Definition of "ignite" []

• To cause to burn. (verb-transitive)
• To set fire to. (verb-transitive)
• To subject to great heat, especially to make luminous by heat. (verb-transitive)
• To arouse the passions of; excite: The insults ignited my anger. (verb-transitive)
• To begin to burn. (verb-intransitive)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "But as to your question, 3f or 4f black powder will easily ignite from a spark."
• "Keeping everything dry enough to ignite is the ultimate "exercise in futility"!"
• "Russian ECLS specialists have estimated that approximately 20% of the onboard SFOGs will not ignite, which is taken into account in the onboard O2 supplies estimates."